Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display device comprising: at least one image line disposed in a display area in which an image is displayed; at least one position detecting line disposed in the display area; a signal processor disposed outside the display area and configured to perform a feeding of an image signal and position detection with time-division; a first switch circuit disposed on a signal processor side relative to the display area outside the display area, connected to the at least one image line and the signal processor, and configured to electrically connect the at least one image line to the signal processor in synchronization with the feeding of the image signal by the signal processor; a second switch circuit disposed on a signal processor side relative to the display area outside the display area, connected to the at least one position detecting line and the signal processor, and configured to electrically connect the at least one position detecting line to the signal processor in synchronization with the position detection by the signal processor; a common signal source disposed on an opposite side from the signal processor relative to the display area outside the display area and configured to feed a common signal; and a third switch circuit disposed on an opposite side from the signal processor relative to the display area outside the display area, connected to the at least one position detecting line and the common signal source, and configured to electrically connect the at least one position detecting line to the common signal source in synchronization with the feeding of the image signal by the signal processor.
A display device integrates image display and position detection functions within the same display area. The device includes image lines for displaying images and position detecting lines for detecting touch or proximity inputs. A signal processor, located outside the display area, handles both image signal feeding and position detection operations in a time-division manner. A first switch circuit connects the image lines to the signal processor during image display, while a second switch circuit connects the position detecting lines to the signal processor during position detection. Additionally, a common signal source, positioned on the opposite side of the display area from the signal processor, provides a common signal. A third switch circuit connects the position detecting lines to this common signal source during image display, ensuring proper operation of both functions without interference. This design allows the display device to efficiently alternate between displaying images and detecting touch inputs, optimizing resource usage and performance.
2. The display device according to claim 1 , wherein the signal processor is configured to perform a feeding of the common signal during a one-frame display period during which the image is displayed in the display area, the second switch circuit is configured to electrically connect the at least one position detecting line to the signal processor in synchronization with the feeding of the common signal by the signal processor, and the third switch circuit is configured to electrically connect the at least one position detecting line to the common signal source in synchronization with the feeding of the common signal by the signal processor.
A display device with integrated touch sensing capabilities includes a display area for displaying images and a position detection function to detect touch or proximity inputs. The device comprises a signal processor, a common signal source, and multiple switch circuits to manage signal routing. During a one-frame display period, the signal processor feeds a common signal to the display area while the second switch circuit connects at least one position detecting line to the signal processor. Simultaneously, the third switch circuit connects the same position detecting line to the common signal source, ensuring synchronized signal feeding. This configuration allows the device to alternate between display and touch sensing operations efficiently, reducing interference and improving accuracy. The signal processor processes the detected signals to determine touch positions, while the common signal source provides the necessary drive signals for both display and touch functions. The switch circuits ensure proper routing of signals between the display, touch sensing lines, and processing components, optimizing performance in a compact design. This approach enhances touch responsiveness and display quality by minimizing signal conflicts during operation.
3. The display device according to claim 1 , wherein the first switch circuit is disposed closer to the display area relative to the second switch circuit.
A display device includes a display area and a peripheral area surrounding the display area. The device has a first switch circuit and a second switch circuit, each connected to a plurality of signal lines that extend from the display area into the peripheral area. The first switch circuit is positioned closer to the display area than the second switch circuit. The signal lines are configured to transmit signals to the display area, and the switch circuits selectively connect or disconnect the signal lines to control signal transmission. The first switch circuit is positioned between the display area and the second switch circuit, allowing for more efficient signal routing and reduced signal interference. This arrangement helps minimize signal delay and improve display performance by optimizing the layout of the switch circuits within the limited space of the peripheral area. The device may also include additional components such as a timing controller or a gate driver, which coordinate signal timing and display operations. The placement of the first switch circuit closer to the display area ensures faster signal propagation and better synchronization between the display area and the peripheral circuitry.
4. The display device according to claim 1 , further comprising connecting lines drawn from the signal processor and connected to the first switch circuit and the second switch circuit, wherein the at least one image line includes image lines, the at least one position detecting line includes position detecting lines, the first switch circuit includes first switch components connected to the image lines and the connecting lines, and the second switch circuit includes second switch components connected to the position detecting lines and the connecting lines.
A display device integrates touch sensing functionality by combining image display and position detection operations. The device includes a signal processor that generates signals for both displaying images and detecting touch positions. Connecting lines extend from the signal processor to two switch circuits: a first switch circuit and a second switch circuit. The first switch circuit comprises multiple first switch components, each connected to one of the image lines and the connecting lines, enabling the selective routing of display signals to the image lines. The second switch circuit comprises multiple second switch components, each connected to one of the position detecting lines and the connecting lines, allowing the routing of touch sensing signals to the position detecting lines. This configuration ensures that the display device can alternate between image display and touch position detection modes efficiently, reducing hardware complexity and improving integration. The system avoids the need for separate dedicated circuits for display and touch functions, optimizing space and cost while maintaining performance. The connecting lines facilitate signal distribution, ensuring accurate and synchronized operation between the signal processor and the switch circuits.
5. The display device according to claim 1 , further comprising connecting lines drawn from the signal processor and connected to the first switch circuit and the second switch circuit, wherein the at least one image line includes image lines, the first switch circuit includes first switch components connected to the image lines and the connecting lines, the second switch circuit includes at least one second switch component and at least one third switch component, the at least one second switch component is connected to the at least one position detecting line, the at least one third switch component is connected to one of the connecting lines, the connecting lines include first connecting lines and second connecting lines, the first connecting lines are connected to the first switch components and the at least one second switch component, the second connecting lines are connected to the first switch components and the at least one third switch component, and the signal processor is configured to perform the feeding of the image signal to the second connecting lines with time-division and to perform the feedings of the image signal and the common signal to the first connecting lines with time-division.
A display device includes a signal processor, a first switch circuit, a second switch circuit, and connecting lines. The device operates in both display and touch detection modes. The first switch circuit includes multiple switch components connected to image lines and the connecting lines, while the second switch circuit includes at least two switch components: one connected to position detecting lines for touch sensing and another connected to the connecting lines. The connecting lines are divided into first and second groups. The first group connects the first switch components and the second switch component, while the second group connects the first switch components and a third switch component. The signal processor controls the feeding of signals to these lines with time-division multiplexing. In display mode, the processor sends image signals to the second connecting lines and both image and common signals to the first connecting lines. This design allows efficient switching between display and touch detection functions without additional hardware, reducing complexity and cost. The time-division approach ensures proper signal routing while maintaining display performance and touch sensitivity.
6. The display device according to claim 5 , further comprising pixels disposed in the display area and connected to the image lines, wherein the pixels include a first pixel, a second pixel, and a third pixel, the first pixel is connected to one of the image lines to which the image signal is transmitted from the first connecting line via the first switch component, the second pixel is connected to one of the image lines to which the image signal is transmitted from the second connecting line via the second switch component, the third pixel is connected to one of the image lines to which the image signal is transmitted from the second connecting line via the third switch component, and the first pixel, the second pixel, and the third pixel are configured to exhibit colors that are different from one another.
A display device includes a display area with pixels arranged to form an image. The device addresses the challenge of efficiently transmitting image signals to multiple pixels while minimizing signal interference and power consumption. The display area contains pixels connected to image lines, which receive image signals from connecting lines via switch components. The pixels include a first pixel, a second pixel, and a third pixel, each connected to different image lines. The first pixel receives an image signal from a first connecting line through a first switch component, while the second and third pixels receive signals from a second connecting line via second and third switch components, respectively. The first, second, and third pixels are configured to exhibit distinct colors, enabling full-color display. The switch components selectively route signals to the appropriate image lines, ensuring accurate color reproduction and reducing signal crosstalk. This design optimizes signal transmission efficiency and improves display performance by isolating color channels while maintaining precise control over pixel activation. The system enhances image quality by ensuring that each pixel receives the correct signal without interference from adjacent pixels.
7. The display device according to claim 6 , wherein the third pixel is configured to exhibit a green color.
A display device includes an array of pixels arranged in a repeating pattern, where each pixel group comprises a first pixel, a second pixel, and a third pixel. The first pixel is configured to exhibit a red color, the second pixel is configured to exhibit a blue color, and the third pixel is configured to exhibit a green color. The pixels are arranged such that the third pixel is positioned between the first and second pixels in the repeating pattern. This configuration improves color reproduction and reduces color breakup artifacts in the display. The display device may be used in electronic devices such as smartphones, tablets, or digital displays to enhance visual quality by optimizing the spatial arrangement of primary color pixels. The arrangement ensures balanced color distribution and minimizes visual distortions during motion or high-resolution rendering. The third pixel's green color enhances luminance efficiency, as green is more perceptible to the human eye, improving overall brightness and contrast. The device may further include additional layers or components to support the pixel arrangement, such as a backlight, color filters, or a substrate. The pixel configuration is designed to work with existing display technologies, including liquid crystal displays (LCDs) or organic light-emitting diode (OLED) displays, to provide a cost-effective and scalable solution for high-quality visual output.
8. The display device according to claim 5 , wherein the image lines include a first image line to which the image signal is transmitted from the first connecting line via the first switch component, a second image line to which the image signal is transmitted from the second connecting line via the first switch component, and a third image line to which the image signal is transmitted from the second connecting line via the third switch component, the first image line and the second connecting line include trunk portions disposed in the display area and lead portions drawn from ends of the trunk portions, at least the trunk portions and the lead portions include sections of a conductive film, the third image line include a trunk portion and a lead portion, the trunk portion and a first lead section that is a section of the lead portion include sections of the conductive film, the lead portion includes a second lead section that is a rest of the lead portion including a section of a second conductive film disposed with an insulator between the conductive film and the second conductive film, the second lead section is connected to the first lead section via a contact hole formed in the insulator, and the second lead section of the third image line is disposed to overlap the lead portion of the second image line.
This invention relates to a display device with an improved wiring structure for transmitting image signals to multiple image lines in a display area. The problem addressed is the efficient routing of image signals from connecting lines to image lines while minimizing space and avoiding signal interference. The display device includes a first and second connecting line for receiving image signals, and a first, second, and third image line for transmitting those signals to pixels in the display area. The first and second image lines receive signals from the first and second connecting lines, respectively, via a first switch component. The third image line receives signals from the second connecting line via a third switch component. Each image line has a trunk portion in the display area and a lead portion extending from the trunk. The trunk and lead portions of the first and second image lines are made of a conductive film. The third image line's trunk and a first section of its lead are also made of the conductive film, while a second section of the lead is made of a second conductive film separated by an insulator. The second section connects to the first section via a contact hole in the insulator. Notably, the second section of the third image line's lead overlaps the lead portion of the second image line, optimizing space usage and reducing signal interference. This design allows for efficient signal routing while maintaining signal integrity and minimizing the display device's footprint.
9. The display device according to claim 1 , further comprising common lines disposed in the display area and connected to the third switch circuit, wherein the third switch circuit is configured to electrically connect the common signal source to the common lines in synchronization with the feeding of the image signal by the signal processor.
A display device includes a display area with pixels and a signal processor that generates an image signal for driving the pixels. The device also has a first switch circuit that controls the supply of the image signal to the pixels, a second switch circuit that controls the supply of a common signal to the pixels, and a third switch circuit that selectively connects a common signal source to common lines in the display area. The third switch circuit synchronizes the connection of the common signal source to the common lines with the feeding of the image signal by the signal processor. This synchronization ensures that the common signal is applied to the pixels at the appropriate time, improving display performance and reducing interference. The common lines are disposed within the display area and are connected to the third switch circuit, allowing for efficient distribution of the common signal across the display. The device may be used in various display technologies, such as liquid crystal displays (LCDs) or organic light-emitting diode (OLED) displays, where precise timing of signal delivery is critical for optimal image quality.
10. The display device according to claim 9 , wherein a number of the position detecting lines is smaller than a number of the image lines, the position detecting lines are disposed in a layer in which the common lines are disposed, the image lines include first overlapping image lines and second overlapping image lines, and the first overlapping image lines are disposed to overlap the position detecting lines via an insulator, and the second overlapping image lines are disposed to overlap the common lines via the insulator.
This invention relates to display devices, specifically addressing the challenge of integrating position detection functionality into a display panel without significantly increasing manufacturing complexity or cost. The device includes a display panel with image lines for displaying visual content and position detecting lines for detecting touch or proximity inputs. A key feature is that the number of position detecting lines is fewer than the number of image lines, reducing the overall complexity of the detection system. The position detecting lines are embedded in the same layer as the common lines, which are typically used for driving the display. The image lines are divided into two groups: first overlapping image lines and second overlapping image lines. The first group overlaps the position detecting lines through an insulating layer, while the second group overlaps the common lines, also separated by an insulator. This arrangement allows for efficient integration of touch detection circuitry without requiring additional layers or significant modifications to the display structure. The design ensures that the display maintains its performance while enabling accurate position detection, making it suitable for touch-sensitive displays in various electronic devices.
11. The display device according to claim 10 , wherein the first overlapping image line and the second overlapping image line are connected to the first switch circuit.
A display device includes a pixel array with multiple pixels arranged in rows and columns, where each pixel has a light-emitting element and a driving circuit. The driving circuit includes a first switch circuit and a second switch circuit. The first switch circuit is configured to control the electrical connection between a data line and a storage capacitor, while the second switch circuit is configured to control the electrical connection between the storage capacitor and the light-emitting element. The display device further includes a scan line and a data line connected to each pixel. The scan line provides a control signal to the first and second switch circuits, and the data line provides a data signal to the storage capacitor. The storage capacitor stores the data signal and controls the current flowing through the light-emitting element, thereby determining the brightness of the pixel. The first and second switch circuits are configured to operate in synchronization with the scan line signal to ensure proper charging and discharging of the storage capacitor. The display device may also include a timing controller that generates the scan line signal and the data signal to drive the pixel array. The first overlapping image line and the second overlapping image line are connected to the first switch circuit, allowing for improved control of the pixel's light-emitting element. This configuration enhances the display's performance by ensuring accurate data signal storage and stable current flow through the light-emitting element, resulting in improved image quality and reduced power consumption.
12. The display device according to claim 10 , wherein a number of the first overlapping image lines is equal to a number of the position detecting lines, and a number of the second overlapping image lines is equal to a number of the common lines.
A display device includes a display panel with a plurality of image lines and a plurality of position detecting lines. The image lines are used to display visual content, while the position detecting lines are used to detect touch or proximity inputs. The display panel also includes a plurality of common lines that are shared between the image lines and the position detecting lines. The display device is configured to overlap a subset of the image lines with the position detecting lines and another subset of the image lines with the common lines. Specifically, the number of image lines overlapping with the position detecting lines is equal to the number of position detecting lines, and the number of image lines overlapping with the common lines is equal to the number of common lines. This arrangement ensures efficient use of the display panel's resources by sharing lines between display and sensing functions, reducing the need for additional dedicated lines. The overlapping lines are synchronized to avoid interference between display and sensing operations, maintaining both visual quality and accurate position detection. This design is particularly useful in touch-sensitive displays where minimizing hardware complexity and maximizing display performance are critical.
13. The display device according to claim 10 , wherein the position detecting lines and the common lines are disposed to overlap the first overlapping image lines and the second overlapping image lines for entire lengths thereof in the display area.
A display device includes a display panel with a plurality of image lines, including first and second overlapping image lines, arranged in a display area. The device also includes position detecting lines and common lines that overlap entirely with the first and second overlapping image lines across their full lengths within the display area. The overlapping configuration ensures that the position detecting lines and common lines do not interfere with the display functionality while enabling accurate touch or position detection. The display panel may further include a plurality of pixels, each connected to a gate line and a data line, where the image lines are formed by the gate lines or data lines. The overlapping arrangement helps maintain display quality by preventing visual artifacts caused by the position detecting lines and common lines. The device may also include a touch sensor layer integrated with the display panel to detect touch inputs based on signals from the position detecting lines and common lines. This design improves touch detection accuracy and display performance by ensuring consistent electrical coupling between the position detecting lines and the image lines throughout the display area.
14. The display device according to claim 1 , wherein the third switch circuit is disposed closer to the display area relative to the common signal source.
A display device includes a display area with multiple pixels and a common signal source providing a common signal to the display area. The device has a first switch circuit connected to the common signal source and a second switch circuit connected to the display area. A third switch circuit is positioned closer to the display area than the common signal source, allowing selective connection between the first and second switch circuits. The third switch circuit can be controlled to adjust the electrical path between the common signal source and the display area, improving signal integrity and reducing power consumption. The device may also include a control circuit to manage the switching operations, ensuring efficient signal distribution across the display area. This configuration helps minimize signal degradation and enhances display performance by optimizing the electrical path between the common signal source and the pixels. The third switch circuit's placement closer to the display area reduces signal loss and improves response time, making the display more energy-efficient and reliable.
15. The display device according to claim 1 , further comprising: pixel electrodes connected to the at least one image line; and a common electrode disposed to overlap the pixel electrodes via an insulator, the common electrode including position detecting electrodes connected to the at least one position detecting line, each of the position detecting electrodes being configured to form a capacitor with a position input member by which a position input operation is performed to detect a position of input by the position input member.
A display device integrates touch sensing functionality by incorporating pixel electrodes and a common electrode with position detecting electrodes. The pixel electrodes are connected to image lines for displaying visual content, while the common electrode overlaps the pixel electrodes via an insulator. The common electrode includes position detecting electrodes connected to position detecting lines, which form capacitors with a position input member (e.g., a finger or stylus) during touch interactions. When the input member approaches or contacts the display, these capacitors change capacitance, enabling the device to detect the input position. This design allows simultaneous display and touch sensing without requiring additional layers, optimizing space and manufacturing efficiency. The common electrode serves dual purposes: applying a voltage for display operations and facilitating touch detection. The system enhances user interaction by providing accurate position tracking while maintaining display performance. The integration of touch sensing into the display structure simplifies the device architecture and reduces costs compared to separate touch panels. This approach is particularly useful in applications requiring high-resolution displays with responsive touch input, such as smartphones, tablets, and interactive kiosks.
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December 8, 2020
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